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Bug #9936

closed

atomic ops in syscall_mstate() induce significant overhead

Added by John Levon about 3 years ago. Updated about 3 years ago.

Status:
Closed
Priority:
Normal
Assignee:
Category:
-
Start date:
2018-10-29
Due date:
% Done:

100%

Estimated time:
Difficulty:
Medium
Tags:
needs-triage
Gerrit CR:

Description

As described by Mateusz Guzik:

https://illumos.topicbox.com/groups/discuss/T602520cd39c57fc9/scalability-issues-due-to-5003-want-kstats-for-per-zone-cpu-usage

the atomic operations added in bug 5003 appear to have a significant cost, at least in this
type of load:


Files

illumos5003.png (4.74 KB) illumos5003.png John Levon, 2018-10-29 12:16 PM

Related issues

Related to illumos gate - Feature #5003: want kstats for per-zone cpu usageClosedJerry Jelinek2014-07-14

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